ML20215H606

Concludes That Injection of Cold Water Into Reactor by Actuation of Safety Injection Sys Had Negligible Effect on Fatigue Life of Rcpb,Based on Review of Rept on 720727 Incident.Addl Info on Mods Requested within 30 Days

ML20215H606
Person / Time
Site:	Surry, 05000000
Issue date:	10/11/1972
From:	Deyoung R US ATOMIC ENERGY COMMISSION (AEC)
To:	Ragone S VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
Shared Package
ML20215H426	List: ML20215H423 ML20215H509 ML20215H606 ML20215H640 ML20215H698 ML20215H885 ML20215H962
References
FOIA-87-20 NUDOCS 8706240156
Download: ML20215H606 (2)

Text

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i OCT 111877.

. Docket No. 50-280 ,I C --

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l Virginia Electrie & Power Company ,

ATTE: Mr. Stanley Ragone Vice President _,

P. O. Box 1194 ,,,

Richmond, Virginia 23209 --

Centlement Based on our review of the Surry Power Station, Unit No.1 report on i the " Operating Incident of July 27, 1972," dated August 27, 1972, we '

have concluded that-(1) the injection of cold water into the reactor by actuation of the safety injection system had a negligible e,ffeet' on the f atigue life of the reactor coolant pressure boundary and (2) ,

that the transient res'ulting' from the ' safety system injecties of cold water had no adverse effect on the structural integrity of the reactor coolant preesure boundary.

Your report states that temperatures up to 172'F in the upper level of the safeguards building were observed during power operation and you propose both temporary and permanent modifications to the ven-tilating system to limit the temperature in the building. In order to provide a complete technical basis for the proposed modifications, we request that you (1) state what the temperature la the safeguards building will be limited to in the future and provide a basis for selectin;; this temperature and (2) submit an analysis to verify that the exposure of safety equipment to a 172*P envireament in the safe-guards building did not adversely affect operability of this equip-ment.

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Tirginia Elaetrie W Feest Coo

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It is regeestad that you provide the additiemal information within thirty (30) days after retaipt of this letter.

Sincerely. - l Original signed byR. C. DeYoung ,

L C. Defeens, Assistant Director for Pressurised Water toesters  !

Direeterats of Licencias  !

ec George D. G11ees. Esq.

Eastem, Willisme, Cay and Gibeen '

P. 9. Ses 1535 -

Richseed, Virginia 23213 - I

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DISTRIBUTION:

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